Ethereum blockchain enthusiasts are turning their attention to the blockchain’s big Shanghai upgrade, enabling the first-ever withdrawals of staked ether (ETH) and completing the network’s historic transition to a fully functional proof-of-stake network. The upgrade (also known as Shapella) is expected to take place around 6:30 p.m. ET (22:30 UTC). In today’s Valid Points, we begin the countdown to Ethereum's upgrade.